Airtac SAID40 Double Rod Cylinder SAID40BX50S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 50mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ40 mm
- Stroke50 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40BX50S
The AirTAC SAID40X50-S is a double-acting, double-rod ISO 15552 profile cylinder. Because a stainless steel rod exits both end covers, the annulus area is identical on extend and retract, yielding an equal 528 N of force each way at 0.5 MPa. The extruded aluminum barrel features sensor grooves on both sides for straightforward switch placement.
Equipped with a magnet (-S), this variant supports AirTAC CMSE reed and DMSE solid-state sensors. The SUS304 stainless rods provide high corrosion resistance, and the PT tapered port threads ensure a robust pneumatic seal. The through-rod design allows mounting a workpiece on the front and a cam or position flag on the rear simultaneously.
Airtac SAID40 Double Rod Cylinder SAID40BX50S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAID40 Double Rod Cylinder SAID40BX50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAID40 Double Rod Cylinder SAID40BX50S Is Used
Symmetric Force Transfer
Ideal for parts ejection or transfer arms where the 528 N force and speed must remain strictly identical in both directions without requiring pressure compensation.
Anti-Rotation Slides
The twin SUS304 rods prevent piston rotation, making it suitable for guiding lifts and vertical slides that cannot tolerate angular drift.
Through-Rod Sensing
Mount the primary tool on the front rod end and attach a DMSE sensor flag or cam to the rear protruding rod for compact dual-station actuation.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX50S the Right Cylinder?
Choose this 40 mm bore when you need 528 N of balanced push and pull force, stepping down from the 63 mm bore (1402 N) for lighter loads, or up from the 32 mm bore (345 N) when extra thrust is required. The twin-rod architecture is selected over a single-rod SAI to provide dual-side guidance, prevent rotation, and allow rear-end sensing. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
To replace an existing ISO 15552 cylinder, match the 40 mm bore, 50 mm stroke, PT port, and the appropriate mounting accessory. The -S magnet enables drop-in compatibility with CMSE and DMSE switches. Note that the adjustable air cushions only decelerate the piston near stroke end; they do not hold the load. If the application requires position holding upon loss of air pressure, consider the SAIL or BSAID series instead.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAID40 Double Rod Cylinder SAID40BX50S FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the push and pull forces are equal. It delivers 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa in both directions.
Yes, the SAID40X50-S is dimensionally interchangeable per ISO 15552. You can drop it in as a replacement by matching the 40 mm bore, 50 mm stroke, PT port, and mounting interface, ensuring the rear rod has adequate clearance.
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